Sky High Zone
From Sonic Retro
A very interesting but challenging zone, Sky High Zone, the second zone of Sonic the Hedgehog 2 (Game Gear), brings hang gliders into the mix, an entirely new aspect that will definitely take some time to get used to. The enemies here consist entirely of a troupe of flying turtles scattered across the sky. The boss of this level is a fairly easy one, you must fight a mechanical bird and its hatchlings in the skies.